基于双曲线型Mohr强度准则下锚索极限抗拔力研究  

Study on ultimate pulling force of anchor base on hyperbolic Mohr strength criterion

作　　者：刘伟平[1] 扶名福[1] 罗小艳[2] 胡小荣[1] 

机构地区：[1]南昌大学建筑工程学院,江西南昌330031 [2]江西科技师范学院,江西南昌330013

出　　处：《煤炭工程》2010年第3期92-93,共2页Coal Engineering

基　　金：国家自然科学基金项目(10862004);江西省自然科学基金项目(2007GZC2073);教育部博士点基金资助项目(20050403002)

摘　　要：基于双曲线型Mohr强度准则和极限平衡原理,研究了预应力锚索的极限抗拔力。锚索的极限抗拔力受到岩土体的种类、破裂面的形状、灌浆压力和围岩压力等影响,研究结果表明:随着灌浆压力的增加,极限抗拔力也相应增加。其结果可以为锚索的工程应用提供理论依据。Base on the hyperbolic Mohr strength criterion and ultimate balance principle, the ultimate pulling force of the pre - stressed anchor was studied. The ultimate pulling force of the anchor would be influenced by the type of the rock and soil mass, shape of the cracking surface, grouting pressure, surrounding rock pressure and others. The study results showed that with the grouting pressure increased, the ultimate pulling force also would be increased. The results could provide the theoretical references to the application of the anchor project.

关 键 词：双曲型强度包络线 预应力锚索 极限抗拔力 

分 类 号：TD350.4[矿业工程—矿井建设]